DNA Structure and Protein Synthesis

What is a codon?

• a sequence of 3 amino acids
• a sequence of three nitrogen bases
• a sequence of 3 enzymes
• a sequence of 3 proteins

The DNA nucleotide is composed of three parts. Which two components make up the nucleotide backbone?

• ribose sugar and base
• ribose sugar and phosphate group
• nitrogen base and deoxyribose sugar
• deoxyribose sugar and phosphate group
  

Tags

NGSS.MS-LS3-1

Which type of RNA delivers the genetic code to the ribosome?

• tRNA
• mRNA
• rRNA
• tmRtmRNA

What is the function of transfer RNA?

• It is a part of the ribosome.
• It bonds to other RNA molecules, leading to their destruction.
  
• It delivers the correct amino acid to the ribosome.
• It carries the information coding for the amino acid sequence of a protein.

Which nucleotide is complementary to adenine?

• adenine
• thymine
• cytosine
• guanine

Which of these is part of the description of protein?

• a folded chain of amino acids
• a folded chain of carbohydrates
• a branched chain of fatty acids
• a branched chain of nucleic acids

Tags

NGSS.MS-LS3-1

Which most directly affects the sequence of amino acids in a protein?

• the DNA in the nucleus of the cell
• the amino acids found in the cytoplasm
• the type of cell in which the protein is made
• the region of the cell in which the protein is made

Tags

NGSS.HS-LS1-1

How are the amino acids linked together during translation?

• by creating peptide bonds
• by creating hydrogen bonds
• by creating covalent bonds
• by creating phospate bonds

How many amino acids can be represented by a single 3-base DNA sequence?

• 1
• 3
• 6
• 8

Which correctly outlined the central dogma

• DNA --> mRNA --> rRNA
• DNA --> tRNA --> protein
• DNA --> mRNA --> protein
• DNA --> amino acid --> protein

Tags

NGSS.HS-LS1-1